Revert "remove toString"

This reverts commit 5191880cbf3ee4d122b0d11b4945fbab0784fda7.

Reason for revert: broke flutter

Original change's description:
> remove toString
> 
> toString may have been used by obsolete debugger only
> find out if that is so
> 
> R=​brianosman@google.com,bsalomon@google.com
> 
> Docs-Preview: https://skia.org/?cl=119894
> Bug:830651
> Change-Id: I737f19b7d3fbc869bea2f443fa3b5ed7c1393ffd
> Reviewed-on: https://skia-review.googlesource.com/119894
> Commit-Queue: Cary Clark <caryclark@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,brianosman@google.com,caryclark@google.com,caryclark@skia.org

Change-Id: I9f81de6c3615ee0608bcea9081b77239b4b8816c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 830651
Reviewed-on: https://skia-review.googlesource.com/129340
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Cary Clark <caryclark@google.com>

10 files changed, 102 insertions, 0 deletions

diff --git a/src/shaders/gradients/SkGradientShader.cpp b/src/shaders/gradients/SkGradientShader.cpp
index eea70ca847..78f514c1c6 100644
--- a/src/shaders/gradients/SkGradientShader.cpp
+++ b/src/shaders/gradients/SkGradientShader.cpp
@@ -626,6 +626,38 @@ void SkGradientShaderBase::commonAsAGradient(GradientInfo* info) const {
     }
 }
 
+void SkGradientShaderBase::toString(SkString* str) const {
+
+    str->appendf("%d colors: ", fColorCount);
+
+    for (int i = 0; i < fColorCount; ++i) {
+        str->appendHex(this->getLegacyColor(i), 8);
+        if (i < fColorCount-1) {
+            str->append(", ");
+        }
+    }
+
+    if (fColorCount > 2) {
+        str->append(" points: (");
+        for (int i = 0; i < fColorCount; ++i) {
+            str->appendScalar(this->getPos(i));
+            if (i < fColorCount-1) {
+                str->append(", ");
+            }
+        }
+        str->append(")");
+    }
+
+    static const char* gTileModeName[SkShader::kTileModeCount] = {
+        "clamp", "repeat", "mirror", "decal",
+    };
+
+    str->append(" ");
+    str->append(gTileModeName[fTileMode]);
+
+    this->INHERITED::toString(str);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/src/shaders/gradients/SkGradientShaderPriv.h b/src/shaders/gradients/SkGradientShaderPriv.h
index e50f1a69e4..dccb4e70cb 100644
--- a/src/shaders/gradients/SkGradientShaderPriv.h
+++ b/src/shaders/gradients/SkGradientShaderPriv.h
@@ -80,6 +80,7 @@ protected:
 
     SkGradientShaderBase(SkReadBuffer& );
     void flatten(SkWriteBuffer&) const override;
+    void toString(SkString* str) const override;
 
     void commonAsAGradient(GradientInfo*) const;
 
diff --git a/src/shaders/gradients/SkLinearGradient.cpp b/src/shaders/gradients/SkLinearGradient.cpp
index 34cac269f5..a377442dc4 100644
--- a/src/shaders/gradients/SkLinearGradient.cpp
+++ b/src/shaders/gradients/SkLinearGradient.cpp
@@ -207,4 +207,14 @@ std::unique_ptr<GrFragmentProcessor> SkLinearGradient::asFragmentProcessor(
 
 #endif
 
+void SkLinearGradient::toString(SkString* str) const {
+    str->append("SkLinearGradient (");
+
+    str->appendf("start: (%f, %f)", fStart.fX, fStart.fY);
+    str->appendf(" end: (%f, %f) ", fEnd.fX, fEnd.fY);
+
+    this->INHERITED::toString(str);
+
+    str->append(")");
+}
 
diff --git a/src/shaders/gradients/SkLinearGradient.h b/src/shaders/gradients/SkLinearGradient.h
index d100a1cf30..111ed99744 100644
--- a/src/shaders/gradients/SkLinearGradient.h
+++ b/src/shaders/gradients/SkLinearGradient.h
@@ -19,6 +19,7 @@ public:
     std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override;
 #endif
 
+    void toString(SkString* str) const override;
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLinearGradient)
 
 protected:
diff --git a/src/shaders/gradients/SkRadialGradient.cpp b/src/shaders/gradients/SkRadialGradient.cpp
index ec0f8a0f95..6d193615a4 100644
--- a/src/shaders/gradients/SkRadialGradient.cpp
+++ b/src/shaders/gradients/SkRadialGradient.cpp
@@ -185,3 +185,19 @@ void SkRadialGradient::appendGradientStages(SkArenaAlloc*, SkRasterPipeline* p,
                                             SkRasterPipeline*) const {
     p->append(SkRasterPipeline::xy_to_radius);
 }
+
+void SkRadialGradient::toString(SkString* str) const {
+    str->append("SkRadialGradient: (");
+
+    str->append("center: (");
+    str->appendScalar(fCenter.fX);
+    str->append(", ");
+    str->appendScalar(fCenter.fY);
+    str->append(") radius: ");
+    str->appendScalar(fRadius);
+    str->append(" ");
+
+    this->INHERITED::toString(str);
+
+    str->append(")");
+}
diff --git a/src/shaders/gradients/SkRadialGradient.h b/src/shaders/gradients/SkRadialGradient.h
index d6963f6971..b0d6854221 100644
--- a/src/shaders/gradients/SkRadialGradient.h
+++ b/src/shaders/gradients/SkRadialGradient.h
@@ -19,6 +19,7 @@ public:
     std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override;
 #endif
 
+    void toString(SkString* str) const override;
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkRadialGradient)
 
 protected:
diff --git a/src/shaders/gradients/SkSweepGradient.cpp b/src/shaders/gradients/SkSweepGradient.cpp
index cfce5fe025..c409d9a4e1 100644
--- a/src/shaders/gradients/SkSweepGradient.cpp
+++ b/src/shaders/gradients/SkSweepGradient.cpp
@@ -241,6 +241,20 @@ sk_sp<SkShader> SkSweepGradient::onMakeColorSpace(SkColorSpaceXformer* xformer)
                                        fGradFlags, &this->getLocalMatrix());
 }
 
+void SkSweepGradient::toString(SkString* str) const {
+    str->append("SkSweepGradient: (");
+
+    str->append("center: (");
+    str->appendScalar(fCenter.fX);
+    str->append(", ");
+    str->appendScalar(fCenter.fY);
+    str->append(") ");
+
+    this->INHERITED::toString(str);
+
+    str->append(")");
+}
+
 void SkSweepGradient::appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* p,
                                            SkRasterPipeline*) const {
     p->append(SkRasterPipeline::xy_to_unit_angle);
diff --git a/src/shaders/gradients/SkSweepGradient.h b/src/shaders/gradients/SkSweepGradient.h
index a58c95752d..dce9a3561b 100644
--- a/src/shaders/gradients/SkSweepGradient.h
+++ b/src/shaders/gradients/SkSweepGradient.h
@@ -20,6 +20,7 @@ public:
     std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override;
 #endif
 
+    void toString(SkString* str) const override;
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSweepGradient)
 
 protected:
diff --git a/src/shaders/gradients/SkTwoPointConicalGradient.cpp b/src/shaders/gradients/SkTwoPointConicalGradient.cpp
index 7d5026bc22..73ec3f213b 100644
--- a/src/shaders/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/shaders/gradients/SkTwoPointConicalGradient.cpp
@@ -199,6 +199,31 @@ sk_sp<SkShader> SkTwoPointConicalGradient::onMakeColorSpace(SkColorSpaceXformer*
                                                  fTileMode, fGradFlags, &this->getLocalMatrix());
 }
 
+
+void SkTwoPointConicalGradient::toString(SkString* str) const {
+    str->append("SkTwoPointConicalGradient: (");
+
+    str->append("center1: (");
+    str->appendScalar(fCenter1.fX);
+    str->append(", ");
+    str->appendScalar(fCenter1.fY);
+    str->append(") radius1: ");
+    str->appendScalar(fRadius1);
+    str->append(" ");
+
+    str->append("center2: (");
+    str->appendScalar(fCenter2.fX);
+    str->append(", ");
+    str->appendScalar(fCenter2.fY);
+    str->append(") radius2: ");
+    str->appendScalar(fRadius2);
+    str->append(" ");
+
+    this->INHERITED::toString(str);
+
+    str->append(")");
+}
+
 void SkTwoPointConicalGradient::appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* p,
                                                      SkRasterPipeline* postPipeline) const {
     const auto dRadius = fRadius2 - fRadius1;
diff --git a/src/shaders/gradients/SkTwoPointConicalGradient.h b/src/shaders/gradients/SkTwoPointConicalGradient.h
index b965e15038..f0d341f17c 100644
--- a/src/shaders/gradients/SkTwoPointConicalGradient.h
+++ b/src/shaders/gradients/SkTwoPointConicalGradient.h
@@ -65,6 +65,7 @@ public:
     const SkMatrix& getGradientMatrix() const { return fPtsToUnit; }
     const FocalData& getFocalData() const { return fFocalData; }
 
+    void toString(SkString* str) const override;
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTwoPointConicalGradient)
 
 protected: