GpuMemoryManager suggests values for renderer Contents Texture Managers' preferred memory limit.

content/common/gpu/gpu_memory_allocation.h

Index: content/common/gpu/gpu_memory_allocation.h
diff --git a/content/common/gpu/gpu_memory_allocation.h b/content/common/gpu/gpu_memory_allocation.h
index b38fe8320403a9bd8327dc659963479e7914867a..3e1197971d94408c158f8887b1c0d6291d687495 100644
--- a/content/common/gpu/gpu_memory_allocation.h
+++ b/content/common/gpu/gpu_memory_allocation.h
@@ -12,7 +12,6 @@
 // and assigned to the browser and renderer context.
 // They will change over time, given memory availability, and browser state.
 
-
 // Memory Allocation which will be assigned to the renderer context.
 struct GpuMemoryAllocationForRenderer {
   enum {
@@ -68,17 +67,24 @@ struct GpuMemoryAllocationForBrowser {
 // GpuMemoryManager.
 struct GpuMemoryAllocation : public GpuMemoryAllocationForRenderer,
                              public GpuMemoryAllocationForBrowser {
+  // Bitmap
+  enum BufferAllocation {
+    kHasNoBuffers = 0,
+    kHasFrontbuffer = 1,
+    kHasBackbuffer = 2
+  };
+
   GpuMemoryAllocation()
       : GpuMemoryAllocationForRenderer(),
         GpuMemoryAllocationForBrowser() {
   }
 
   GpuMemoryAllocation(size_t gpu_resource_size_in_bytes,
-                      bool suggest_have_backbuffer,
-                      bool suggest_have_frontbuffer)
+                      int allocationBitmap)
       : GpuMemoryAllocationForRenderer(gpu_resource_size_in_bytes,
-                                       suggest_have_backbuffer),
-        GpuMemoryAllocationForBrowser(suggest_have_frontbuffer) {
+            (allocationBitmap & kHasBackbuffer) == kHasBackbuffer),
+        GpuMemoryAllocationForBrowser(
+            (allocationBitmap & kHasFrontbuffer) == kHasFrontbuffer) {
   }
 
   bool operator==(const GpuMemoryAllocation& other) const {