Simplify some CloudPrintProxy code.

pdf/document_loader.h

Index: pdf/document_loader.h
diff --git a/pdf/document_loader.h b/pdf/document_loader.h
index af39390e975f657821a45bf4321d112e62294d31..cf85e99e5a1add35f6ef865815f2581805f31a28 100644
--- a/pdf/document_loader.h
+++ b/pdf/document_loader.h
@@ -51,10 +51,10 @@ class DocumentLoader {
   // Data access interface. Return true is successful.
   bool GetBlock(uint32_t position, uint32_t size, void* buf) const;
 
-  // Data availability interface. Return true data avaialble.
+  // Data availability interface. Return true data available.
   bool IsDataAvailable(uint32_t position, uint32_t size) const;
 
-  // Data availability interface. Return true data avaialble.
+  // Data availability interface. Return true data available.
   void RequestData(uint32_t position, uint32_t size);
 
   bool IsDocumentComplete() const;