libgui: Enable -Weverything and -Werror

Enables -Weverything and -Werror, with just a few exceptions for
warnings we can't (or shouldn't need to) work around.

Cherry pick of I034abec27bf4020d84af60d7acc1939c59986dd6 plus a
couple of minor changes to CpuConsumer.cpp to make it work with a
prior change:
    Uncomment CC_LOGV on line 46
    Change C-style cast to static_cast on line 71

Change-Id: Iaec610477ea0122317b0578fb74caf2383d4cf08
diff --git a/include/gui/BufferQueueProducer.h b/include/gui/BufferQueueProducer.h
index ed1056a..f794ea3 100644
--- a/include/gui/BufferQueueProducer.h
+++ b/include/gui/BufferQueueProducer.h
@@ -73,9 +73,7 @@
     // updateTexImage() is called.  If width and height are both zero, the
     // default values specified by setDefaultBufferSize() are used instead.
     //
-    // The pixel formats are enumerated in graphics.h, e.g.
-    // HAL_PIXEL_FORMAT_RGBA_8888.  If the format is 0, the default format
-    // will be used.
+    // If the format is 0, the default format will be used.
     //
     // The usage argument specifies gralloc buffer usage flags.  The values
     // are enumerated in gralloc.h, e.g. GRALLOC_USAGE_HW_RENDER.  These
@@ -93,8 +91,9 @@
     //
     // In both cases, the producer will need to call requestBuffer to get a
     // GraphicBuffer handle for the returned slot.
-    virtual status_t dequeueBuffer(int *outSlot, sp<Fence>* outFence, bool async,
-            uint32_t width, uint32_t height, uint32_t format, uint32_t usage);
+    virtual status_t dequeueBuffer(int *outSlot, sp<Fence>* outFence,
+            bool async, uint32_t width, uint32_t height, PixelFormat format,
+            uint32_t usage);
 
     // See IGraphicBufferProducer::detachBuffer
     virtual status_t detachBuffer(int slot);
@@ -171,7 +170,7 @@
 
     // See IGraphicBufferProducer::allocateBuffers
     virtual void allocateBuffers(bool async, uint32_t width, uint32_t height,
-            uint32_t format, uint32_t usage);
+            PixelFormat format, uint32_t usage);
 
 private:
     // This is required by the IBinder::DeathRecipient interface