Allow the resource cache to (indirectly) flush the InOrderDrawBuffer

R=bsalomon@google.com

Author: robertphillips@google.com

Review URL: https://chromiumcodereview.appspot.com/18466005

git-svn-id: http://skia.googlecode.com/svn/trunk@9949 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 78220c0..39d0db3 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -541,6 +541,20 @@
     }
 }
 
+bool GrContext::OverbudgetCB(void* data) {
+    GrAssert(NULL != data);
+
+    GrContext* context = reinterpret_cast<GrContext*>(data);
+
+    // Flush the InOrderDrawBuffer to possibly free up some textures
+    context->flush();
+
+    // TODO: actually track flush's behavior rather than always just
+    // returning true.
+    return true;
+}
+
+
 GrTexture* GrContext::createUncachedTexture(const GrTextureDesc& descIn,
                                             void* srcData,
                                             size_t rowBytes) {