DM::SKPSrc::size() reports correct size.

Also, DM::GPUSink and DM::RasterSink crop DM::Src::size() to 2048x2048.

Motivation:
  Improve PDF testing by printing the entire SKP.

Source: http://crrev.com/863243004

BUG=skia:3365

Committed: https://skia.googlesource.com/skia/+/441b10eac09a1f44983e35da827a6b438a409e63

CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu12-ShuttleA-GTX660-x86-Release-Trybot

Review URL: https://codereview.chromium.org/863243005

1 files changed, 8 insertions, 1 deletions

diff --git a/gm/gm.h b/gm/gm.h
index b474729366..0de9875896 100644
--- a/gm/gm.h
+++ b/gm/gm.h
@@ -53,7 +53,14 @@ namespace skiagm {
         void drawBackground(SkCanvas*);
         void drawContent(SkCanvas*);
 
-        SkISize getISize() { return this->onISize(); }
+        SkISize getISize() {
+            SkISize size = this->onISize();
+            // Sanity cap on GM dimensions.
+            SkASSERT(size.width() * size.height() <= 2359296 &&  // 2.25 megapixels
+                     size.width()                 <= 2048    &&  // Typical GPU max dimension.
+                     size.height()                <= 2048);
+            return size;
+        }
         const char* getName();
 
         virtual bool runAsBench() const { return false; }