[wasm] Adjust limits for WASM binary entities.

R=clemensh@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2587003002
Cr-Commit-Position: refs/heads/master@{#41808}

src/wasm/module-decoder.cc

@@ -540,7 +540,8 @@ class ModuleDecoder : public Decoder {
           table = &module->function_tables[table_index];
         }
         WasmInitExpr offset = consume_init_expr(module, kAstI32);
-        uint32_t num_elem = consume_u32v("number of elements");
+        uint32_t num_elem =
+            consume_count("number of elements", kV8MaxWasmTableEntries);
         std::vector<uint32_t> vector;
         module->table_inits.push_back({table_index, offset, vector});
         WasmTableInit* init = &module->table_inits.back();
@@ -550,7 +551,6 @@ class ModuleDecoder : public Decoder {
           init->entries.push_back(index);
           if (table && index < module->functions.size()) {
             // Canonicalize signature indices during decoding.
-            // TODO(titzer): suboptimal, redundant when verifying only.
             table->map.FindOrInsert(module->functions[index].sig);
           }
         }

src/wasm/wasm-limits.h

@@ -18,14 +18,15 @@ const size_t kV8MaxWasmExports = 100000;
 const size_t kV8MaxWasmGlobals = 1000000;
 const size_t kV8MaxWasmDataSegments = 100000;
 const size_t kV8MaxWasmMemoryPages = 16384;  // = 1 GiB
-const size_t kV8MaxWasmStringSize = 256;
+const size_t kV8MaxWasmStringSize = 100000;
 const size_t kV8MaxWasmModuleSize = 1024 * 1024 * 1024;  // = 1 GiB
 const size_t kV8MaxWasmFunctionSize = 128 * 1024;
 const size_t kV8MaxWasmFunctionLocals = 50000;
 const size_t kV8MaxWasmFunctionParams = 1000;
 const size_t kV8MaxWasmFunctionMultiReturns = 1000;
 const size_t kV8MaxWasmFunctionReturns = 1;
-const size_t kV8MaxWasmTableSize = 16 * 1024 * 1024;
+const size_t kV8MaxWasmTableSize = 10000000;
+const size_t kV8MaxWasmTableEntries = 10000000;
 const size_t kV8MaxWasmTables = 1;
 const size_t kV8MaxWasmMemories = 1;