cc: Don't change the LayerTreeSettings impl painting sizes.

The values in LayerTreeSettings should be considered as consts, and
we should not change them when the renderer changes. Instead, we should
derive values from the settings and the renderer capabilities as
appropriate.

The impl painting settings for default_tile_size and max_untiled_layer_size
are changed in this CL to not be modified in the layer tree settings, but
instead be clamped to the renderer's max texture size in picture layer impl.

Unit tests verify that when the renderer changes, the new max texture size
is honoured.

Tests:
PictureLayerImplTest.ClampTilesToToMaxTileSize
PictureLayerImplTest.ClampSingleTileToToMaxTileSize

R=enne
BUG=234233

Review URL: https://chromiumcodereview.appspot.com/14340010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@195824 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 0 deletions

diff --git a/cc/test/test_web_graphics_context_3d.h b/cc/test/test_web_graphics_context_3d.h
index 82dd63e..c7a92a5 100644
--- a/cc/test/test_web_graphics_context_3d.h
+++ b/cc/test/test_web_graphics_context_3d.h
@@ -89,6 +89,10 @@ class TestWebGraphicsContext3D : public FakeWebGraphicsContext3D {
       WebKit::WGC3Denum pname,
       WebKit::WGC3Duint* params);
 
+  virtual void getIntegerv(
+      WebKit::WGC3Denum pname,
+      WebKit::WGC3Dint* value);
+
   virtual void genMailboxCHROMIUM(WebKit::WGC3Dbyte* mailbox);
   virtual void produceTextureCHROMIUM(WebKit::WGC3Denum target,
                                       const WebKit::WGC3Dbyte* mailbox) { }
@@ -133,6 +137,8 @@ class TestWebGraphicsContext3D : public FakeWebGraphicsContext3D {
     shared_contexts_.push_back(context3d);
   }
 
+  void set_max_texture_size(int size) { max_texture_size_ = size; }
+
   static const WebKit::WebGLId kExternalTextureId;
   virtual WebKit::WebGLId NextTextureId();
 
@@ -154,6 +160,7 @@ class TestWebGraphicsContext3D : public FakeWebGraphicsContext3D {
   std::vector<WebKit::WebGLId> textures_;
   base::hash_set<WebKit::WebGLId> used_textures_;
   std::vector<WebKit::WebGraphicsContext3D*> shared_contexts_;
+  int max_texture_size_;
   int width_;
   int height_;
 };